1)
#include <iostream>
#include <math.h>
using namespace std;
int main ()
{
float a,b, P;
cout << "Please enter a, b :"<< endl;
cin>> a >> b;
P= (a+b)*2;
cout << P << endl;
return 0;
}
2)
float a, S;
cout << "Please enter a :"<< endl;
cin>> a ;
S= a*a;
cout << S << endl;
1)
#include <iostream>
#include <math.h>
using namespace std;
int main ()
{
float a,b, P;
cout << "Please enter a, b :"<< endl;
cin>> a >> b;
P= (a+b)*2;
cout << P << endl;
return 0;
}
2)
#include <iostream>
#include <math.h>
using namespace std;
int main ()
{
float a, S;
cout << "Please enter a :"<< endl;
cin>> a ;
S= a*a;
cout << S << endl;
return 0;
}